| Solar
energy is the radiant light and heat from the Sun that has been
harnessed by humans since ancient times using a range of ever-evolving
technologies. Solar radiation along with secondary solar resources such
as wind and wave power, hydroelectricity and biomass account for most of
the available renewable energy on Earth. Only a minuscule fraction of
the available solar energy is used.
Solar power technologies provide electrical generation by means of heat engines or photovoltaics. Once converted its uses are only limited by human ingenuity. A partial list of solar applications includes space heating and cooling through solar architecture, potable water via distillation and disinfection, daylighting, hot water, thermal energy for cooking, and high temperature process heat for industrial purposes. Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute sunlight. Active solar techniques include the use of photovoltaic panels, solar thermal collectors, with electrical or mechanical equipment, to convert sunlight into useful outputs. Passive solar techniques include orienting a building to the Sun, selecting materials with favourable thermal mass or light dispersing properties, and designing spaces that naturally circulate air. |
Wind PowerWind power is taking the energy generated from the wind and using it in more productive ways. Wind turbines are a machine that can transform the kinetic energy found in wind and convert it into mechanical energy. Mechanical energy works with kinetic energy to balance into the mechanical system. When the mechanical energy is converted into electricity it can be called a wind turbine. There are two different types of wind turbines; Horizontal axis and Vertical axis. The most common of these two are the horizontal axis. Horizontal axis features the main rotor shaft and generator at the top of the turbine. The horizontal axis is pointed into the wind. Most of these horizontal axis have a gearbox that allows the blades to turn quicker to generate more electricity. The tower is what provides turbulence. The turbine can be pointed somewhat upward and stand well above the blades. The blades are made of durable material capable of withstanding high winds. When you see these turbines in the field you may think that they are no longer helpful but there are still people who believe in using them. Horizontal axis wind turbines can either turn upward or downward. If the blades are turned upward, they don't last long. They begin to crack and breakdown in high winds. When blades are facing downward they stay in line with the wind longer, and outlast the upward turned blades - through the high winds, without breaking. Because they are so durable it keeps the cost down. |
More ArticlesWhat You Need To Know About Solar Power Concentrating Solar Power Systems Why Are Solar Panels Important |
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Types of Horizontal Axis Wind Turbines Windmills Consists of four or more blades, usually short, and can wooden blades. These were used to grind grain. As the winds picked up it would rotate a mechanism inside allowing it to run the grain through a mill crushing it. Rural Windmills was originally from Australia but later moved over to the USA. Farmers found that this type of windmill was good to pump water and electricity to the barns and fields. This windmill had several blades and can still be seen today in fields. They were constructed of metal usually in order to carry electricity for lights or maybe a radio. Modern Turbines are what we have now standing in fields. They feature three blades that are pointed at the ends. The reason for their unusual shape is because they have been proven to exceed wind velocity up to 6 times more, allowing for high efficiency and reliability. The advantages of this type of wind turbine include stability, tallness, bendable, durable and strong. The disadvantages my include cannot operate well close to the ground, hard to transport over sea, difficult to install, not in big demand, there are concerns with how they affect radar, structural damage done with storms and wear. There are good points and bad points to owning these types of turbines. They have been proven to work and you can have one or thirty one out in your field. They do help to generate electricity and other great things that we would normally have to go without.
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... through and reduce the amount of time that you use another source of heat. You may want to consider building a sun room onto the side that catches the morning sun allowing it to heat up naturally and then install ceiling fans that will circulate the air into the parts of the house. During the day this ... ... homes are not a natural way of energy. Conserving the energy that comes from the sun is the most natural way to equip our homes with energy, heat and more. When we use natural resources we save in several ways; by preserving the earth, cutting down on monthly and over all costs, and no inconvenient power ... ... sources that will attract the solar power to the source. In order to make this affective we need to be able to find solar sources that are not expensive but can provide the solar power that we need. A standard home can benefit greatly to switching over to solar power. It is easy to do. Also when you build ... ... become overpowered by the amount and the intensity of the heat. This kind of heat can be taken and converted into heat that can heat your home, your water, an outbuilding, or any other building you would like to have heat in. Heating by solar power is a free way of heating. When you heat using solar power ... ... Photovoltaic cells, made of thin pieces of semiconductors, convert radiation from the sun into electricity. Solar energy would not be affected by the supply and demand of fuel for it is free and it doesn't polute the atmosphere. It is natural and pure. It would provide us with better health. There are ... |
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